Anton Freiherr von Petz (born 21 January 1819 in Venitze, Transylvania – 7 May 1885 in Trieste) was an Austrian Navy officer. He served in the Imperial and Royal Navy, attaining the rank of Viceadmiral. He was created Knight of the Military Order of Maria Theresa. He had a notable role during the Battle of Lissa in 1866, commanding the 2nd Division, which consisted of unarmored ships. He flew his flag aboard Kaiser, and during the battle his ship rammed the Italian ironclad Re di Portogallo. Later, in 1869, he undertook an expedition to the Far East and South America.